#ifndef SRC_ASYNC_WRAP_H_
#define SRC_ASYNC_WRAP_H_

#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS

#include "base-object.h"
#include "uv.h"
#include "v8.h"

#include <stdint.h>

namespace node {

#define NODE_ASYNC_ID_OFFSET 0xA1C

#define NODE_ASYNC_PROVIDER_TYPES(V) \
    V(NONE)                          \
    V(CRYPTO)                        \
    V(FSEVENTWRAP)                   \
    V(FSREQWRAP)                     \
    V(GETADDRINFOREQWRAP)            \
    V(GETNAMEINFOREQWRAP)            \
    V(HTTPPARSER)                    \
    V(JSSTREAM)                      \
    V(PIPEWRAP)                      \
    V(PIPECONNECTWRAP)               \
    V(PROCESSWRAP)                   \
    V(QUERYWRAP)                     \
    V(SHUTDOWNWRAP)                  \
    V(SIGNALWRAP)                    \
    V(STATWATCHER)                   \
    V(TCPWRAP)                       \
    V(TCPCONNECTWRAP)                \
    V(TIMERWRAP)                     \
    V(TLSWRAP)                       \
    V(TTYWRAP)                       \
    V(UDPWRAP)                       \
    V(UDPSENDWRAP)                   \
    V(WRITEWRAP)                     \
    V(ZLIB)

class Environment;

class AsyncWrap : public BaseObject {
public:
    enum ProviderType {
#define V(PROVIDER) \
    PROVIDER_##PROVIDER,
        NODE_ASYNC_PROVIDER_TYPES(V)
#undef V
    };

    AsyncWrap(Environment* env,
        v8::Local<v8::Object> object,
        ProviderType provider,
        AsyncWrap* parent = nullptr);

    virtual ~AsyncWrap();

    static void Initialize(v8::Local<v8::Object> target,
        v8::Local<v8::Value> unused,
        v8::Local<v8::Context> context);

    static void DestroyIdsCb(uv_idle_t* handle);

    inline ProviderType provider_type() const;

    inline int64_t get_uid() const;

    // Only call these within a valid HandleScope.
    v8::Local<v8::Value> MakeCallback(const v8::Local<v8::Function> cb,
        int argc,
        v8::Local<v8::Value>* argv);
    inline v8::Local<v8::Value> MakeCallback(const v8::Local<v8::String> symbol,
        int argc,
        v8::Local<v8::Value>* argv);
    inline v8::Local<v8::Value> MakeCallback(uint32_t index,
        int argc,
        v8::Local<v8::Value>* argv);

    virtual size_t self_size() const = 0;

private:
    inline AsyncWrap();
    inline bool ran_init_callback() const;

    // When the async hooks init JS function is called from the constructor it is
    // expected the context object will receive a _asyncQueue object property
    // that will be used to call pre/post in MakeCallback.
    uint32_t bits_;
    const int64_t uid_;
};

void LoadAsyncWrapperInfo(Environment* env);

} // namespace node

#endif // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS

#endif // SRC_ASYNC_WRAP_H_
